Product Type:Four-Row Tapered Roller Bearing

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1. Overview

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2. Basic Dimensions

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3. Structural Features

The bearing utilizes a specific component set—including two double-raceway inner rings and a combination of double and single-raceway outer rings—with spacers strategically placed to allow for precise clearance adjustment. This structurally optimized design offers the advantage of supporting large radial loads concurrently with certain axial loads.

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4. Load-Carrying Capacity

Radial Load Capacity: With a radial load capacity rated at 2.5-3.5 times that of single-row tapered roller bearings, this bearing is suitable for high-precision industrial applications with demanding load requirements.
Load Type Adaptability: It is ideal for managing combined loads (predominantly radial) and provides excellent resistance in environments with heavy and impact loads.

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5. Performance Characteristics

Limiting Speed: While its structurally dictated limiting speed is lower than that of four-row cylindrical roller bearings, this trade-off makes it fully capable for heavy-duty applications.
Axial Load Capacity: The bearing is engineered to accommodate bidirectional axial loads, proving its reliability as a thrust bearing even in demanding industrial settings.

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6. Material & Manufacturing

Heat Treatment: Special heat treatment process applied to enhance hardness, wear resistance, and fatigue life.

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7. Application Fields

Primary Application: Specifically utilized for rolling mill work rolls and backup rolls.
Other Applications: Effectively deployed in other types of heavy-duty machinery including cranes, mining machinery, and wind turbines, where operational demands include exceptional resistance to high and impact loads.